Reduce CPU usage for input method switching.

chrome/browser/chromeos/login/keyboard_switch_menu.cc

Index: chrome/browser/chromeos/login/keyboard_switch_menu.cc
diff --git a/chrome/browser/chromeos/login/keyboard_switch_menu.cc b/chrome/browser/chromeos/login/keyboard_switch_menu.cc
index de2026b0f654a0a972ac3d7de11a99692c538eeb..ff11beecbff0852e89b48eb83d4412bfb3f741ff 100644
--- a/chrome/browser/chromeos/login/keyboard_switch_menu.cc
+++ b/chrome/browser/chromeos/login/keyboard_switch_menu.cc
@@ -24,8 +24,10 @@ KeyboardSwitchMenu::KeyboardSwitchMenu()
 
 ////////////////////////////////////////////////////////////////////////////////
 // InputMethodMenu::InputMethodMenuHost implementation.
-void KeyboardSwitchMenu::UpdateUI(
-    const std::wstring& name, const std::wstring& tooltip) {
+void KeyboardSwitchMenu::UpdateUI(const std::string& input_method_id,
+                                  const std::wstring& name,
+                                  const std::wstring& tooltip,
+                                  size_t num_active_input_methods) {
   // Update all view hierarchies so that the new input method name is shown in
   // the menu button.
   views::Widget::NotifyLocaleChanged();